<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Grid Layout Test: Grid with a subgridded axis and an auto repeater as line name list</title>
<link rel="help" href="https://drafts.csswg.org/css-grid-2">
  <style>
    #grid {
      display: grid;
      grid-template-columns: subgrid repeat(auto-fill, [b]);
    }
  </style>
</head>
<body>
  <div id="grid">
    <div style="grid-column: b"></div>
  </div>
</body>
</html>